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Finding the Fourth Proportional to 297,020.18, 445,522.88 and 86,659.94

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Solution

The fourth proportional to 297,020.18, 445,522.88 and 86,659.94 is: 129,987.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    297,020.18 : 445,522.88 = 86,659.94 : x
  2. Step 2: Convert to fraction form
    297,020.18/445,522.88 = 86,659.94/x
  3. Step 3: Cross multiply
    297,020.18x = 445,522.88 × 86,659.94
  4. Step 4: Simplify right side
    297,020.18x = 38,608,986,049.43
  5. Step 5: Solve for x
    x = 38,608,986,049.43/297,020.18
  6. Step 6: Final answer
    x = 129,987.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.